could the intake be holding my low end down?

Current combo is with open chamber cast iron 360 heads.

Car went 12.8 @ 105.5 mph 1.84 60ft last time out with an issue at the top end which i think is electrical and carb related. Going back to a 1.5 rocker to see if it picks up the low end and ultimately the 60ft

Early valiant sedan 3400 lbs with me in the car and a full tank of gas.
904 with a TA 3400-3800 stall
8 3.4 with 3.73 gears and 255 ET Street MT's

70 over 360
Ported 587's with a 1.96 valve. 240's cfm @ 550 lift 60 cc chamber.
Fellpro 8553pt
Speed pro H405CP pistons
Weiand stealth intake with 800 AVS carb
Crower 31242- 271/284 222/234 @ .050 on 112 idles nice and smooth.
Mallory Dizzy with 2 pink springs initial 18 and total 38 all in by 2000 rpm but retards 2-3 degrees as the revs pick up past 3K
1 5/8 try y's with 2.5 inch exhaust.

The top end was thrown together to get me out of a spot. Will be going back to the 302's (58cc's) an Air Gap and a Mr gasket 1121 thin head gasket which should pick me up another 0.5 to 1 point of comp.

In my view the cars too slow.....:)
I had a very similar combo that went 106@3650 with a manual trans. But my 60ft was in the 2.4x zone. At 185psi, the bottom-end was killer strong. This with a 367 @ 10.95Scr with OOTB Eddies, a 270/276/110 advertised/223/[email protected] cam, 3.55s, and a 7000 redline. Why 7000? Well I thought it prudent to quit somewhere, not that the engine wanted to. My timing was 14 initial, 28*@2800and all-in 34*@3400. Full TTI 3" exhaust. Rpm-AG and 750DP. I only completed one run and hit 12.9x. I was and still am running 1.6 arms. I doubt my combo had more in it, except for the lazy 60ft,lol. I was running 245/60-14 street tires,lol.
So Ima guessing our combos are pretty similar.
Well, were. That 223 cam died in 2004, and I swapped in a 230* in it's place . Now I shift at 7200. and the combo went 93 in the Eighth, still with a 2.4x 60ft lol, 325/50-15 BFG DRs this time but same street suspension,lol.